## 5 columns ignored with more than 50 categories.
## V1: 456 categories
## V6: 170 categories
## V7: 149 categories
## V8: 123 categories
## V9: 103 categories
## 6 features with more than 20 categories ignored!
## V1: 144 categories
## V5: 31 categories
## V6: 144 categories
## V7: 46 categories
## V8: 61 categories
## V9: 66 categories
## 4 features with more than 50 categories ignored!
## V1: 144 categories
## V6: 144 categories
## V8: 61 categories
## V9: 66 categories